Wife and I each used it twice, it worked fine for her the first time, but not for me, so went to pasport agent and right on through.
Second time I got the green check mark, but gates wouldn't open. Wife was sent to passport agent when picture wouldn't take,so
both of us zoomed though passport check only having to tell them where we were staying.
Half the people were having trouble and one of the koseks was not working.
So much for technology.